With the increasing maturity of electromagnetic water meter technology, the range ratio can be very high. Many people can't help asking when buying an electromagnetic water meter: Is the range of electromagnetic water meters bigger and better?
Let's talk about traffic indicators first. The flow indicator of the water meter is as follows:
Q1 means minimum flow value, the minimum traffic within the rated range;
The Q2 boundary between Q1 and Q3 is the border traffic. The scope of the water meter is divided into low and high areas. The lowest error in low -area traffic and high zone traffic;
Q3 is commonly used and maximum traffic under the rated flow;
Q4 exceeds the overload of Q3.
The schedule ratio (R) is the ratio of flow to minimum flow in a normal range, that is, R = Q3/Q1. Q2/Q1 = 1.6, national standards 1.6 are fixed values. In the past, enterprises could choose 2.5 or 4, but the state required to improve the manufacturing standards and difficulties of the water meter, and now it is implemented in accordance with international standards.
Some people may have doubts: Will the scale ratio of the schedule not affect the accuracy of the electromagnetic water meter? In fact, the accuracy of the current water meter is fixed, 1%or 2%. Departing this standard is unqualified products and cannot be produced by the factory. Therefore, the range of the electromagnetic water meter is better!
But as we all know, the price of electromagnetic water meters is not low. The larger the schedule, the higher the expenditure. It is recommended to select the most cost -effective in the right range, and do not blindly pursue the maximum range ratio. It is recommended to select the 160 or 250 electromagnetic water meter for trade settlement, and it is recommended to choose a pipe network test and evaluation of no less than 400. Of course, the bigger the better.
